class create:
   def __init__(self):
         self.nItemID = 0   
         self.nCnt = 0   
   def encode(self,buff):
        buff.writeInt(self.nItemID)
        buff.writeInt(self.nCnt)
   def decode(self,buff):
        self.nItemID = buff.readInt()
        self.nCnt = buff.readInt()
